var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
const UserRouter = require('./routes/admin/UserRouter');
const JWT = require('./utils/JWT');
const BlogRouter = require('./routes/admin/BlogRouter');
const webBlogRouter = require('./routes/web/BlogRouter');
const ProjectRouter = require('./routes/admin/ProjectRouter');
const webProjectRouter = require('./routes/web/ProjectRouter');
var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/users', usersRouter);

app.use(webBlogRouter);
app.use(webProjectRouter);

// 登录验证 token
app.use((req,res,next)=> {
  // 判断是否是第一次登录
  if(req.url === '/adminapi/user/login') {
    next()
    return 
  }
  // token 有效就授权通过
  const token = req.headers['authorization'].split(' ')[1]
  if (token) {
    const payload = JWT.verify(token)
    if (payload) {
      const newToken = JWT.generate({
        _id: payload._id,
        username: payload.username,
      },'1d')
      res.header('Authorization', newToken)
      next()
    } else {
      res.status(401).send({
        errCode: '-1',
        errMsg: 'token过期'
      })
    }
  }
})
app.use(UserRouter);
app.use(BlogRouter);
app.use(ProjectRouter);


// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
